Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A multi-primary color display device for displaying color images based on four or a greater predetermined number of primary colors, comprising: a display panel including a plurality of pixel formation portions arranged in a matrix pattern, a plurality of data signal lines and a plurality of scanning signal lines crossing the data signal lines; a data signal line drive circuit for applying a plurality of data signals which represent an image to be displayed, to the data signal lines; and a scanning signal line drive circuit for selectively activating the scanning signal lines; wherein the scanning signal line drive circuit is formed on the display panel; each pixel formation portion includes a predetermined number of sub pixel-formation portions for forming subpixels of said predetermined number of primary colors; the predetermined number of sub pixel-formation portions included in each pixel formation portion are arranged in a matrix pattern consisting of a plurality of rows extending in a direction in which the scanning signal lines extend and a plurality of columns extending in a direction in which the data signal lines extend; each of the sub pixel-formation portions included in the pixel formation portions corresponds to one of intersections made by the data signal lines and the scanning signal lines, and is connected to the data signal line and the scanning signal line which pass through said intersection; each sub pixel-formation portion includes a predetermined capacitance, captures and supplies a voltage in the data signal line which passes through the corresponding intersection to the predetermined capacitance when the corresponding scanning signal line is activated; and the scanning signal line drive circuit sequentially activates the scanning signal lines for a predetermined period so that each sub pixel-formation portion captures the voltage in the data signal line as a subpixel value of the image to be displayed, while also activating each scanning signal line for a predetermined period preceding said period of sequential activation by as many periods as a vertical color cyclic number, the vertical color cyclic number being defined as a quantity of the sub pixel-formation portions within each pixel formation portion in a direction in which the data signal lines extend.
This multi-primary color display device shows color images using four or more primary colors. It has a display panel with pixels in a matrix, data signal lines, and scanning signal lines. A data signal driver sends image data to the data signal lines. A scanning signal driver activates the scanning signal lines, and this driver is built directly on the display panel. Each pixel has subpixels for each primary color arranged in a matrix. Each subpixel connects to a data and scanning signal line, storing the voltage from the data line when the scanning line activates it. The scanning signal driver activates lines sequentially, plus it activates each scanning line for an additional period before the sequential activation, based on the number of subpixels in a column.
2. The multi-primary color display device according to claim 1 , wherein the vertical color cyclic number is provided by an even number, and wherein the data signal line drive circuit reverses polarity of the data signals once per a number of horizontal periods given by a multiplication of the horizontal period by a quotient which is obtained by dividing the vertical color cyclic number by an even aliquot thereof.
The multi-primary color display described previously, where the number of subpixels in each column is an even number, also features a data signal line driver that reverses the polarity of the data signals at regular intervals. Specifically, the polarity is reversed after a duration calculated by multiplying the length of a horizontal period by a quotient. This quotient is obtained by dividing the number of subpixels per column by an even divisor of that number. This alternating polarity helps prevent image sticking and ensures consistent color representation over time by averaging the voltage applied to the liquid crystals.
3. The multi-primary color display device according to claim 2 , wherein the color images are based on four primary colors, wherein the four sub pixel-formation portion included in each pixel formation portion are arranged in a matrix pattern consisting of two rows extending in a direction in which the scanning signal lines extend and two columns extending in a direction in which the data signal lines extend, and wherein the data signal line drive circuit reverses polarity of the data signals once per each horizontal period.
Building upon the previous multi-primary color display that reverses polarity, this version specifically uses four primary colors. Each pixel is comprised of four subpixels arranged in a 2x2 matrix. Furthermore, the data signal line driver reverses the polarity of the data signals after every horizontal period (the time it takes to scan one line of the display). This frequent polarity reversal ensures even charge distribution across the liquid crystals, minimizing image artifacts and maximizing display lifespan, especially important with multiple primary color subpixels packed tightly together.
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December 30, 2014
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